The neutron count rate fluctuation reaches six orders of magnitude between the ohmic plasma scenario and high power of auxiliary heating on an experimental advanced superconducting tokamak(EAST).The measurement result...The neutron count rate fluctuation reaches six orders of magnitude between the ohmic plasma scenario and high power of auxiliary heating on an experimental advanced superconducting tokamak(EAST).The measurement result of neutron flux monitoring(NFM)is a significant feedback parameter related to the acquisition of radiation protection-related information and rapid fluctuations in neutron emission induced by plasma magnetohydrodynamic activity.Therefore,a wide range and high time resolution are required for the NFM system on EAST.To satisfy these requirements,a digital pulse signal acquisition and processing system with a wide dynamic range and fast response time was developed.The present study was conducted using a field-programmable gate array(FPGA)and peripheral component interconnect extension for instrument express(PXIe)platform.The digital dual measurement modes,which are composed of the pulse-counting mode and AC coupled square integral's Campbelling mode,were designed to expand the measurement range of the signal acquisition and processing system.The time resolution of the signal acquisition and processing system was improved from 10 to 1 ms owing to utilizing highspeed analog-to-digital converters(ADCs),a high-speed PXIe communication with a direct memory access(DMA)mode,and online data preprocessing technology of FPGA.The signal acquisition and processing system was tested experimentally in the EAST radiation field.The test results showed that the time resolution of NFM was improved to 1 ms,and the dynamic range of the neutron counts rate was expanded to more than 10^(6) counts per second.The Campbelling mode was calibrated using a multipoint average linear fitting method;subsequently,the fitting coefficient reached 0.9911.Therefore,the newly developed pulse signal acquisition and processing system ensures that the NFM system meets the requirements of high-parameter experiments conducted on EAST more effectively.展开更多
Cavity beam position monitor(BPM) is widely used in a precise electron beam position measurement. Based on high performance oscilloscope-embedded EPICS input/output controller,we developed an on-line cavity BPM signal...Cavity beam position monitor(BPM) is widely used in a precise electron beam position measurement. Based on high performance oscilloscope-embedded EPICS input/output controller,we developed an on-line cavity BPM signal processing system for fast data acquisition solution when designing a cavity BPM.Also,methods for extracting the position information from cavity pickup signals and calibration algorithm are included in this solution.展开更多
An integrated monitoring system for running parameters of key mining equipmenton the basis of condition monitoring technology and modern communication networktechnology was developed.The system consists of a client co...An integrated monitoring system for running parameters of key mining equipmenton the basis of condition monitoring technology and modern communication networktechnology was developed.The system consists of a client computer with functions ofsignal acquisition and processing, and a host computer in the central control room.Thesignal acquisition module of the client computer can collect the running parameters fromvarious monitoring terminals in real-time.The DSP high-speed data processing system ofthe main control module can quickly achieve the numerical calculation for the collectedsignal.The signal modulation and signal demodulation are completed by the frequencyshift keying circuit and phase-locked loop frequency circuit, respectively.Finally, the signalis sent to the host computer for logic estimation and diagnostic analysis using the networkcommunication technology, which is helpful for technicians and managers to control therunning state of equipment.展开更多
Aiming at applications as a projectile-borne video reconnaissance system, the overall design and prototype in principle of a mortar video reconnaissance system bomb were developed. Mortar launched test results show th...Aiming at applications as a projectile-borne video reconnaissance system, the overall design and prototype in principle of a mortar video reconnaissance system bomb were developed. Mortar launched test results show that the initial integrated system was capable of transmitting images through tens of kilometers with the image resolution identifying effectively tactical targets such as roads, hills, caverns, trees and rivers. The projectile-borne video reconnaissance system is able to meet the needs of tactical target identification and battle damage assessment for tactical operations. The study will provide significant technological support for further independent development.展开更多
Algorithms for reconstruction of linear and circular birefringence-dichroism of optically thin anisotropic biological layers are presented.The technique of Jones matrix tomography of poly-crystalline films of biologic...Algorithms for reconstruction of linear and circular birefringence-dichroism of optically thin anisotropic biological layers are presented.The technique of Jones matrix tomography of poly-crystalline films of biological fuids of various human organs has been developed and experimentally tested.The coordinate distributions of phase and amplitude anisotropy of bile films and synovial fuid taken from the knee joint are determined and statistically analyzed.Criteria(statistical moments of 3rd and 4th orders)of differential diagnostics of early stages of cholelithiasis and septic arthritis of the knee joint with excellent balanced accuracy were determined.Data on the diagnostic fficiency of the Jones matrix tomography method for polyerystalline plasma(liver disease),urine(albuminuria)and cytological smears(cervical cancer)are presented.展开更多
目的:基于网络药理学方法探讨复方斑蝥胶囊治疗非小细胞肺癌(non-small cell lung cancer,NSCLC)的作用机制。方法:从中药系统药理学数据库与分析平台(traditional Chinese medicine systems pharmacology database and analysis platfo...目的:基于网络药理学方法探讨复方斑蝥胶囊治疗非小细胞肺癌(non-small cell lung cancer,NSCLC)的作用机制。方法:从中药系统药理学数据库与分析平台(traditional Chinese medicine systems pharmacology database and analysis platform,TCMSP)筛选复方斑蝥胶囊中11味中药的活性成分及作用靶点,利用药物靶标数据库TTD、人类基因数据库(the human gene database,GeneCards)、美国国家生物技术信息中心(NCBI)筛选NSCLC相关靶点基因,通过STRING数据库对疾病与药物共同靶点构建蛋白-蛋白相互作用(PPI)网络模型,运用Cytoscape 3.5.1软件构建化合物-关键靶点相互作用网络图,利用DAVID6.8数据库对共同靶点进行生物过程和信号通路富集分析。结果:共筛选出复方斑蝥胶囊的210种活性成分和310个作用靶点,与治疗NSCLC相关靶点155个,关键靶点68个,主要通过作用于丝氨酸/苏氨酸特异性蛋白激酶1、肿瘤蛋白质53、血管内皮生长因子A、白细胞介素6、促分裂原活化蛋白激酶3、胱天蛋白酶3、JUN激酶、髓细胞增生原癌基因、肿瘤坏死因子、促分裂原活化蛋白激酶1、促分裂原活化蛋白激酶8、信号转导因子和转录激活因子3(急性期应答因子)、表皮生长因子、前列腺素内过氧化物合成酶2(前列腺素G/H合成酶和环氧酶)、雌激素受体1关键靶蛋白调控癌症通路、PI3K-Akt信号通路、癌症中的蛋白多糖通路、NSCLC通路等发挥治疗NSCLC的作用。结论:复方斑蝥胶囊可能通过多靶点、多途径治疗NSCLC。展开更多
基金supported by the Users with Excellence Program of the Hefei Science Center CAS (No. 2020HSC-UE012)
文摘The neutron count rate fluctuation reaches six orders of magnitude between the ohmic plasma scenario and high power of auxiliary heating on an experimental advanced superconducting tokamak(EAST).The measurement result of neutron flux monitoring(NFM)is a significant feedback parameter related to the acquisition of radiation protection-related information and rapid fluctuations in neutron emission induced by plasma magnetohydrodynamic activity.Therefore,a wide range and high time resolution are required for the NFM system on EAST.To satisfy these requirements,a digital pulse signal acquisition and processing system with a wide dynamic range and fast response time was developed.The present study was conducted using a field-programmable gate array(FPGA)and peripheral component interconnect extension for instrument express(PXIe)platform.The digital dual measurement modes,which are composed of the pulse-counting mode and AC coupled square integral's Campbelling mode,were designed to expand the measurement range of the signal acquisition and processing system.The time resolution of the signal acquisition and processing system was improved from 10 to 1 ms owing to utilizing highspeed analog-to-digital converters(ADCs),a high-speed PXIe communication with a direct memory access(DMA)mode,and online data preprocessing technology of FPGA.The signal acquisition and processing system was tested experimentally in the EAST radiation field.The test results showed that the time resolution of NFM was improved to 1 ms,and the dynamic range of the neutron counts rate was expanded to more than 10^(6) counts per second.The Campbelling mode was calibrated using a multipoint average linear fitting method;subsequently,the fitting coefficient reached 0.9911.Therefore,the newly developed pulse signal acquisition and processing system ensures that the NFM system meets the requirements of high-parameter experiments conducted on EAST more effectively.
基金Supported by National Natural Science Foundation(Grant No.11075198)
文摘Cavity beam position monitor(BPM) is widely used in a precise electron beam position measurement. Based on high performance oscilloscope-embedded EPICS input/output controller,we developed an on-line cavity BPM signal processing system for fast data acquisition solution when designing a cavity BPM.Also,methods for extracting the position information from cavity pickup signals and calibration algorithm are included in this solution.
基金Supported by the National Hi-tech Research and Development Program of China(2007AA04Z415)the Hunan Province and Xiangtan City Natural Science Joint Foundation(09JJ8005)the Torch Program Project of Hunan Province(2008SH044)
文摘An integrated monitoring system for running parameters of key mining equipmenton the basis of condition monitoring technology and modern communication networktechnology was developed.The system consists of a client computer with functions ofsignal acquisition and processing, and a host computer in the central control room.Thesignal acquisition module of the client computer can collect the running parameters fromvarious monitoring terminals in real-time.The DSP high-speed data processing system ofthe main control module can quickly achieve the numerical calculation for the collectedsignal.The signal modulation and signal demodulation are completed by the frequencyshift keying circuit and phase-locked loop frequency circuit, respectively.Finally, the signalis sent to the host computer for logic estimation and diagnostic analysis using the networkcommunication technology, which is helpful for technicians and managers to control therunning state of equipment.
文摘Aiming at applications as a projectile-borne video reconnaissance system, the overall design and prototype in principle of a mortar video reconnaissance system bomb were developed. Mortar launched test results show that the initial integrated system was capable of transmitting images through tens of kilometers with the image resolution identifying effectively tactical targets such as roads, hills, caverns, trees and rivers. The projectile-borne video reconnaissance system is able to meet the needs of tactical target identification and battle damage assessment for tactical operations. The study will provide significant technological support for further independent development.
基金support of the Academy of Finland(grant projects:311698)support of INFOTECH grant project,as well as the MEPhI Academic Excellence Project(Contract No.02.a03.21.0005)the National Research Tomsk State University Academic D.I.Mendeleev Fund Program.
文摘Algorithms for reconstruction of linear and circular birefringence-dichroism of optically thin anisotropic biological layers are presented.The technique of Jones matrix tomography of poly-crystalline films of biological fuids of various human organs has been developed and experimentally tested.The coordinate distributions of phase and amplitude anisotropy of bile films and synovial fuid taken from the knee joint are determined and statistically analyzed.Criteria(statistical moments of 3rd and 4th orders)of differential diagnostics of early stages of cholelithiasis and septic arthritis of the knee joint with excellent balanced accuracy were determined.Data on the diagnostic fficiency of the Jones matrix tomography method for polyerystalline plasma(liver disease),urine(albuminuria)and cytological smears(cervical cancer)are presented.
文摘目的:基于网络药理学方法探讨复方斑蝥胶囊治疗非小细胞肺癌(non-small cell lung cancer,NSCLC)的作用机制。方法:从中药系统药理学数据库与分析平台(traditional Chinese medicine systems pharmacology database and analysis platform,TCMSP)筛选复方斑蝥胶囊中11味中药的活性成分及作用靶点,利用药物靶标数据库TTD、人类基因数据库(the human gene database,GeneCards)、美国国家生物技术信息中心(NCBI)筛选NSCLC相关靶点基因,通过STRING数据库对疾病与药物共同靶点构建蛋白-蛋白相互作用(PPI)网络模型,运用Cytoscape 3.5.1软件构建化合物-关键靶点相互作用网络图,利用DAVID6.8数据库对共同靶点进行生物过程和信号通路富集分析。结果:共筛选出复方斑蝥胶囊的210种活性成分和310个作用靶点,与治疗NSCLC相关靶点155个,关键靶点68个,主要通过作用于丝氨酸/苏氨酸特异性蛋白激酶1、肿瘤蛋白质53、血管内皮生长因子A、白细胞介素6、促分裂原活化蛋白激酶3、胱天蛋白酶3、JUN激酶、髓细胞增生原癌基因、肿瘤坏死因子、促分裂原活化蛋白激酶1、促分裂原活化蛋白激酶8、信号转导因子和转录激活因子3(急性期应答因子)、表皮生长因子、前列腺素内过氧化物合成酶2(前列腺素G/H合成酶和环氧酶)、雌激素受体1关键靶蛋白调控癌症通路、PI3K-Akt信号通路、癌症中的蛋白多糖通路、NSCLC通路等发挥治疗NSCLC的作用。结论:复方斑蝥胶囊可能通过多靶点、多途径治疗NSCLC。
